EP1389686A1 - Elektrohydraulischer Bremsmodul - Google Patents
Elektrohydraulischer Bremsmodul Download PDFInfo
- Publication number
- EP1389686A1 EP1389686A1 EP03007173A EP03007173A EP1389686A1 EP 1389686 A1 EP1389686 A1 EP 1389686A1 EP 03007173 A EP03007173 A EP 03007173A EP 03007173 A EP03007173 A EP 03007173A EP 1389686 A1 EP1389686 A1 EP 1389686A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- pressure
- valve
- control
- proportional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
- F03D7/0248—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking by mechanical means acting on the power train
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/003—Systems with load-holding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/50—Control logic embodiment by
- F05B2270/506—Control logic embodiment by hydraulic means, e.g. hydraulic valves within a hydraulic circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the invention relates to an electro-hydraulic brake module in the preamble of Claim 1 specified type.
- Known wind turbines have a hydraulically operated brake to the Shut down the rotor, if necessary with simultaneous rotor blade adjustment.
- the brake is also activated if in the network to which the wind turbine is connected, a failure occurs because the rotor speed would then increase undesirably, and with her the speed of the electricity generating generator. After eliminating the power failure the brake is released.
- the rotor only runs slowly up to a speed high, which corresponds to the target speed of the generator. This means a significant one Delay in electricity delivery, especially when many wind turbines are delayed must be connected to the network again.
- the brake can be between a full braking position and a disengaged position, and in a braking state in which the Braking torque is only a fraction of the drive torque of the drive unit, so that the drive unit can be started slowly without the safety device to have to put out of function.
- the brake works with only one fixed slip and without proportional regulation.
- a lifting module known from US Pat. No. 4,548,296 for a lifting mechanism is for lifting operation and Lowering operation equipped with solenoid valves.
- a braking device is not provided.
- the invention has for its object an electro-hydraulic brake module for to specify a wind turbine that is structurally simple and reliable and one proportional brake control enables the at least in the event of a power failure Generator set speed keeps.
- pressure medium is supplied via the changeover valve depending on the speed fed into the working line and / or via the control valve to the tank, to modulate the braking effect proportionally, using the proportional pressure relief control valve the drain control so that the target speed of the generator is held.
- the two valves are simple, reliable and inexpensive.
- the brake module responds quickly and maintains the target speed precise.
- the poppet valve design ensures that in the respective shut-off position No leakage occurs:
- the proportional pressure control valve regulates so to speak high actual brake pressure down to the target brake pressure, while low actual brake pressure via the changeover valve in interaction with the influence of the proportional pressure relief control valve is brought up to the target brake pressure.
- the proportional pressure relief control valve and the changeover valve are each pressure-controlled from the work line. This enables the proportional pressure relief control valve an automatic pressure control function. Supported with the changeover valve the pressure pre-control, if necessary, the switching intervention of the black / white magnet.
- the changeover valve is also pressure-controlled from the pressure source to achieve rapid switching operations. The pressure pilot control of the changeover valve is however not a must.
- the proportional pressure relief control valve has one for the pressure control function control spring acting against the proportional magnet.
- the switch valve points on the other hand, one against the input pressure from the work management and the Black / white magnets acting parallel to the pilot pressure from the pressure source Switchover spring on, which switches the switching process when the black / white magnet is de-energized initiates.
- braking concepts for wind turbines. Either it will Braking position or the braking force by the spring of the spring brake cylinder generated and the brake release position or reduction of the brake pressure brought about by hydraulic action of the brake cylinder against the spring, or it is the braking position or braking force by the hydraulic Actuation of the brake cylinder against the force of the spring and the Release position set by the spring.
- the inventive concepts can Brake module easily take into account, the two aforementioned Concepts are so modifiable that with de-energized magnets and the braking position adjusting spring of the brake cylinder either the maximum braking position or the full release position is set, or the person responsible for the release position Spring of the brake cylinder with de-energized magnets either the full braking position or the full brake release position is maintained.
- the hydraulic, against the spring either to the brake release position or adjustable to the braking position is the proportional pressure relief control valve thanks to the proportional magnet from a through position actuated towards the tank towards a shut-off position, while the switch valve through the black / white magnet from a shut-off position to a Passage position is actuated.
- the consequence of this training is that at Hydraulically adjustable brake cylinder against the spring for the brake release position deenergized magnet the full braking position is set while at hydraulic Brake cylinder adjustable against the spring to the braking position when the magnets are de-energized the full release position is set.
- the brake pressure could set the passage position unintentionally via the pressure pilot control an adjustment device is expediently leads to a drop in the brake pressure provided for the preload of the control spring in order to coordinate the preload to the brake pressure predetermined for the full braking position to be able to adjust so that when the proportional magnet is de-energized, no unwanted Brake pressure drop occurs, but the leakage-free seat valve design comes into play optimally.
- the electronic control device is expediently one with a speed sensor of a machine element to be braked and a pressure sensor in the work line connected program control device which via a power control line the current corresponding to the braking pressure for the proportional magnet, and via the Voltage control line a control voltage to excite or de-excite the Black / white magnets to e.g. in the event of a grid failure to which the wind turbine is connected is connected, a speed limitation to the target speed of the To regulate the generator.
- the two simple valves it becomes proportional Braking modulation achieved, which allows the machine element, i.e. the generator the wind turbine, continue to run exactly at the target speed in the event of a power failure to let until the grid disturbance is eliminated, so that the full electricity supply can continue without noticeable delay.
- a wind turbine W in Fig. 1 has a rotor 1, which via a gear 2 and a shaft 3 drives a generator 4.
- a brake disc 5 arranged with the at least one brake cylinder Z, in the shown Embodiment at least two oppositely working brake cylinders Z, cooperates.
- Each brake cylinder Z is a so-called spring brake cylinder, which contains a spring 7 (e.g. several ring or plate springs or the like), and against the force of the spring 7 can be applied hydraulically from a working line 6.
- Speed sensor 8 picks up the speed of shaft 3 or generator 4 and transmits it signals corresponding to the speed to an electronic control device C, in the embodiment shown, a program control device.
- a pressure sensor 9 is connected to the working line 6, which detects the pressure in signals corresponding to the working line 6 (actual brake pressure information) to the program control device C transmitted.
- the brake cylinder Z can be operated by means of an electro-hydraulic brake module M adjust proportionally.
- the brake modules M of the first to fourth embodiments are designed similarly and only vary in details that correspond to the respective braking concept of the wind turbine judge.
- each embodiment of the brake module M are a proportional pressure relief control valve V1 for drain control from the working line 6 to one Tank T and parallel to it between a shut-off position and a through position convertible changeover valve V2 for feeding pressure medium into the working line 6 provided from a pressure source P (pump, or pump with pressure accumulator).
- the two valves V1, V2 are seat valves, i.e. they are in their respective Shut-off position leak-tight.
- a current control line 10 leads from the program control device C to Proportional magnet 15 of the valve V1, and a voltage control line 11 to one Black / white switching magnet 17 of valve V2.
- the proportional pressure relief control valve V1 is connected to the tank T via a tank line 13, from which the pump P sucks, which via a pressure line 12 to the changeover valve V2 is connected.
- the proportional pressure relief control valve V1 designed so that the proportional magnet 15 as a function of Value of the current present on the current control line 10 the valve from a through position held by a control spring 14 towards a shut-off position adjusted to the tank.
- the valve V1 has a control function.
- a throttle D1 is provided while a throttle D2 is provided upstream of the changeover valve V2.
- the throttle is D2 smaller than the throttle D1.
- the throttle D2 has a diameter of 0.5 mm.
- the proportional pressure relief control valve V1 is from the working line 6 pressure-controlled, namely parallel to the control spring 14th the control spring 14 and the pressure pilot control from the working line 15 act against the force of the proportional magnet 15th
- the switch valve 16 is in the shut-off position shown by a switch spring 16 held and can be excited when the black / white magnet 17 in one Switch through position.
- the switching valve V2 is from the working line 6 parallel to the force of the black / white magnet 17 and also from the pressure line 12 parallel to the switching spring 16 each pressure-controlled. Is upstream of the throttle D2 a check valve R blocking in the flow direction to the pump P is provided.
- the brake cylinders Z are in Fig. 1 by the springs 7 towards the braking position adjusted. Leave by means of the brake pressure entered in the working line 6 the braking effect modulates proportionally or the full release position hydraulically to adjust.
- both magnets 15, 17 are de-energized.
- the changeover valve V2 is in the shut-off position, whereas the proportional pressure relief control valve V1 in the passage position to the tank is the working line 6 relieved of pressure.
- the brake cylinders Z are in the full braking position.
- the proportional magnet 15 becomes full energized and the black / white magnet 17 excited.
- the proportional pressure relief control valve V1 assumes its shut-off position while the changeover valve V2 is in its open position.
- the maximum, through the pressure relief valve 18 set brake pressure keeps the brake cylinder Z in its full Releasing positions.
- the program control device C monitors based on the signals of the Sensors 8, 9 the speed of the generator 4 and the pressure in the working line 6. If the generator speed runs undesirably high, e.g.
- the Black / white solenoid 17 de-energized goes into the shut-off position
- the current for the proportional magnet 15 is set to a value that one Brake pressure in the working line 6 corresponds to the speed of the generator is maintained at the target speed.
- the proportional pressure relief control valve V1 allows just enough pressure medium to flow out of the working line 6 to the tank T, that the desired brake pressure is set in the working line 6 and the speed of the generator 4 is held.
- the proportional pressure relief control valve regulates V1 using the pilot pressure from the work line 6. The actual brake pressure is brought up to a lower target brake pressure.
- the proportional modulation of the The braking effect could also be carried out with a permanently excited black / white magnet 17 because the throttle D2 is smaller than the throttle D1.
- the second embodiment of the brake module M in FIG. 2 is for a brake concept designed in which the brake position is hydraulic by applying the brake cylinder Z is set against the spring 7. With de-energized magnets 15, 17 is the full release position set.
- the proportional magnet 15 initially corresponds to a current value energized with the target brake pressure and the black / white magnet 17 excited, in order to feed in pressure medium in conjunction with the proportional pressure relief control valve V1 the target brake pressure is generated and maintained. If a speed change occurs, the program control device C at least changes the current value for the proportional magnet 15. If necessary, the magnet also becomes 17 de-excited or aroused.
- a braking concept is chosen, which is similar as in Fig. 2, the braking position of the brake cylinder Z is set hydraulically, and the brake release position is effected by the spring 7.
- the full braking position is set here with maximum braking pressure, because that Proportional pressure relief control valve V1 is in its shut-off position while the changeover valve V2 is in its open position.
- the proportional magnet 15 receives a corresponding one with the target brake pressure Electricity.
- the black and white magnet 17 can be excited to the Setting the shut-off position does not have to, however, since the quantity fed in is smaller is the maximum quantity to be drained. Because of the high pilot pressure from the Working line 6 takes the proportional pressure control valve V1 first its full open position before it decreases with decreasing pressure in the working line 6 adjusts the target brake pressure.
- control spring 14 in Fig. 3 is an adjusting device 19 for the thread bias provided this to the maximum brake pressure in the working line 6 so that when the proportional solenoid 15 is not energized, the Pilot pressure cannot move valve V1 to the open position.
- a braking concept is similar to that in FIG. 1 selected, i.e. spring 7 of brake cylinder Z is responsible for the braking position, while the hydraulic pressure applies the brake pressure against the spring 7 modulated.
- the full release position is set because in the working line 6 has the maximum brake pressure.
- the proportional magnet 15 receives a corresponding with the target brake pressure Current value. Thanks to the high pilot pressure from the working line 6 (the switching valve V2 can then already be switched to the shut-off position, does not have to), the valve V1 assumes its full open position to the Reduce the actual brake pressure to the target brake pressure. Then the pilot pressure decreases, valve V1 adjusts the target brake pressure until it finally reaches its shut-off position occupies.
- each embodiment is based on the same valve components, i.e. it can at least largely identical valve blocks are used.
- the two Valves V1, V2 could be combined in one block, as by the dash-dotted rectangles in the figures is indicated, together with the Chokes, the magnets and the springs.
- the proportional pressure relief control valve could be designed in such a way that the proportional magnet acts directly on the control spring and its preload changed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Wind Motors (AREA)
Abstract
Description
- Fig. 1
- als Blockschaltbild eine Windkraftanlage mit einem elektrohydraulischen Bremsmodul, in einer ersten Ausführungsform,
- Fig. 2
- den Bremsmodul in einer zweiten Ausführungsform,
- Fig. 3
- den Bremsmodul in einer dritten Ausführungsform, und
- Fig. 4
- den Bremsmodul in einer vierten Ausführungsform.
Claims (8)
- Elektrohydraulischer Bremsmodul (M), insbesondere für eine Windkraftanlage (W), mit wenigstens einem Federspeicher-Bremszylinder (Z), dessen hydraulische Druckbeaufschlagung gegen die Feder (7) durch eine mit einer elektronischen Steuervorrichtung (C) verbundene Ventilbaugruppe gesteuert wird, dadurch gekennzeichnet, dass der Bremsmodul (M) zur proportionalen Bremssteuerung zumindest bei einem Netzausfall zur Ablasssteuerung zu einem Tank (T) ein durch einen Proportionalmagneten (15) betätigbares Druckbegrenzungs-Regelventil (V1) und zur Einspeisesteueruhg aus einer Druckquelle (P) ein durch einen Schwarz/Weiß-Magneten (17) betätigbares Umschaltventil (V2), jeweils in Sitzventilbauweise, in Parallelschaltung in einer Arbeitsleitung (6) zum Bremszylinder (Z) aufweist.
- Bremsmodul nach Anspruch 1, dadurch gekennzeichnet, dass stromauf des Druckbegrenzungs-Regelventils (V1) und stromauf des Umschaltventils (V2) je eine Drossel (D1, D2) vorgesehen ist, und dass die Drossel (D2) stromauf des Umschaltventils (V2) kleiner ist als die andere Drossel (D1).
- Bremsmodul nach Anspruch 1, dadurch gekennzeichnet, dass das Druckbegrenzungs-Regelventil (V1) und das Umschaltventil (V2) jeweils aus der Arbeitsleitung (6) und das Umschaltventil (V2) zusätzlich auch von der Druckquelle (P) her druckvorgesteuert sind.
- Bremsmodul nach Anspruch 1, dadurch gekennzeichnet, dass das Druckbegrenzungs-Regelventil (V1) eine gegen den Proportionalmagneten (15) wirkende Regelfeder (14) und das Umschaltventil (V2) eine gegen den Vorsteuerdruck aus der Arbeitsleitung (6) und den Schwarz/Weiß-Magneten (17) parallel zum Vorsteuerdruck von der Druckquelle (P) wirkende Umschaltfeder (16) aufweisen.
- Bremsmodul nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass bei einem Bremszylinder (Z), der hydraulisch gegen die Feder (7) entweder zur Bremslösestellung oder zur Bremsstellung verstellbar ist, das Druckbrenzungs-Regelventil (V1) durch den Proportionalmagneten (15) aus einer Durchgangsstellung zum Tank (T) in Richtung zu einer Absperrstellung, und das Umschaltventil (V2) durch den Schwarz/Weiß-Magneten (17) aus einer Absperrstellung in eine Durchgangsstellung betätigbar sind.
- Bremsmodul nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass bei einem Bremszylinder (Z), der hydraulisch gegen die Feder (7) entweder zur Bremslösestellung oder zur Bremsstellung verstellbar ist, das Druckbegrenzungs-Regelventil (V1) durch den Proportionalmagneten (15) aus einer Absperrstellung in Richtung zu einer Durchgangsstellung zum Tank (T) und das Umschaltventil (V2) durch den Schwarz/Weiß-Magneten (17) aus einer Durchgangsstellung zu einer Absperrstellung betätigbar sind.
- Bremsmodul nach wenigstens einem der Ansprüche 4 und 6, dadurch gekennzeichnet, dass die Vorspannung der Regelfeder (14) verstellbar ist.
- Bremsmodul nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die elektrische Steuervorrichtung (C) eine mit einem Drehzahlsensor (8) eines zu bremsenden Maschinenelements (3, 4, 5) und einem Drucksensor (9) in der Arbeitsleitung (6) verbundene Programmsteuerung ist, und dass zwischen der Programmsteuerung und dem Proportionalmagneten (15) eine Stromsteuerleitung (10) und zwischen der Programmsteuerung und dem Schwarz/Weiß-Magneten (17) eine Spannungssteuerleitung (11) vorgesehen sind, über die die Programmsteuervorrichtung zumindest bei Ausfall des Windkraftmaschinen-Netzes durch Strom- und Spannungsänderungen eine Drehzahlbegrenzung auf eine Soll-Drehzahl proportional einregelt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20212459U DE20212459U1 (de) | 2002-08-13 | 2002-08-13 | Elektrohydraulischer Bremsmodul |
| DE20212459U | 2002-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1389686A1 true EP1389686A1 (de) | 2004-02-18 |
| EP1389686B1 EP1389686B1 (de) | 2005-06-01 |
Family
ID=30010680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03007173A Expired - Lifetime EP1389686B1 (de) | 2002-08-13 | 2003-03-28 | Elektrohydraulischer Bremsmodul |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1389686B1 (de) |
| DE (2) | DE20212459U1 (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533520A1 (de) * | 2003-11-18 | 2005-05-25 | HAWE Hydraulik GmbH & Co. KG | Elektrohydraulische Regenerativ-Steuervorrichtung zur Rotorblattverstellung einer Windkraftanlage |
| WO2006010377A1 (en) * | 2004-07-28 | 2006-02-02 | General Electric Company | Mechanical emergency brake for wind turbines and method for operating same |
| US7397145B2 (en) * | 2004-03-19 | 2008-07-08 | S.B. Patent Holding Aps | Automatic braking and locking of a wind turbine |
| DE102010041824B3 (de) * | 2010-09-30 | 2012-03-08 | Repower Systems Se | Hydraulische Bremseinrichtung für eine Windenergieanlage |
| US12372065B2 (en) | 2023-03-28 | 2025-07-29 | General Electric Renovables Espana, S.L. | Rotating unbalanced rotor hubs and installing wind turbine rotor blades |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006012008A1 (de) * | 2006-03-14 | 2007-09-20 | Robert Bosch Gmbh | Steuervorrichtung zur Rotorblattverstellung |
| ES2696506T5 (es) | 2006-06-29 | 2022-11-11 | Vestas Wind Sys As | Una construcción de torre para una turbina eólica |
| DE102007002136B4 (de) * | 2007-01-10 | 2010-02-18 | Nordex Energy Gmbh | Windenergieanlage mit einer hydraulisch betätigten Rotorbremse und Verfahren zur hydraulischen Steuerung einer Rotorbremse |
| DE102007040834A1 (de) * | 2007-08-29 | 2009-03-05 | S.B. Patent Holding Aps | Verfahren zum Betreiben einer Windenergieanlage und Steuer- und Regeleinheit zur Ausführung des Verfahrens |
| DE102009028612A1 (de) * | 2009-08-18 | 2011-02-24 | Zf Friedrichshafen Ag | Windkraftanlage und Verfahren zur Betriebssteuerung einer Windkraftanlage |
| ES2384140B1 (es) | 2010-02-04 | 2013-05-16 | Gamesa Innovation & Technology, S.L. | Freno mecánico para aerogenerador. |
| DE102012222637A1 (de) * | 2012-12-10 | 2014-06-12 | Senvion Se | Turnantrieb für eine Windenergieanlage und Verfahren zum Drehen der Rotorwelle einer Windenergieanlage |
| DE102021000031B4 (de) | 2021-01-08 | 2022-10-27 | Deutsche Van Rietschoten & Houwens Gmbh | Druckerzeugungsvorrichtung für eine Bremsvorrichtung, Bremsvorrichtung, Verfahren und Verwendung |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4548296A (en) | 1980-02-26 | 1985-10-22 | Oil Drive Kogyo, Ltd. | Hydraulic elevator |
| DE4140408A1 (de) * | 1991-12-07 | 1993-06-09 | Robert Bosch Gmbh, 7000 Stuttgart, De | Elektrohydraulische steuereinrichtung |
| DE19515884A1 (de) | 1995-04-29 | 1996-10-31 | Hartmann & Laemmle | Einrichtung zur Sicherung einer elektrohydraulischen Antriebseinheit |
| US5611199A (en) * | 1995-12-13 | 1997-03-18 | Caterpillar Inc. | Two stage electrohydraulic pressure control valve |
| EP0908413A2 (de) * | 1997-10-08 | 1999-04-14 | Still Wagner GmbH & Co. KG | Fluförderzeug mit einer Lastaufnahmevorrichtung und Verfahren zum Absenken der Lastaufnahmevorrichtung |
-
2002
- 2002-08-13 DE DE20212459U patent/DE20212459U1/de not_active Expired - Lifetime
-
2003
- 2003-03-28 EP EP03007173A patent/EP1389686B1/de not_active Expired - Lifetime
- 2003-03-28 DE DE50300595T patent/DE50300595D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4548296A (en) | 1980-02-26 | 1985-10-22 | Oil Drive Kogyo, Ltd. | Hydraulic elevator |
| DE4140408A1 (de) * | 1991-12-07 | 1993-06-09 | Robert Bosch Gmbh, 7000 Stuttgart, De | Elektrohydraulische steuereinrichtung |
| DE19515884A1 (de) | 1995-04-29 | 1996-10-31 | Hartmann & Laemmle | Einrichtung zur Sicherung einer elektrohydraulischen Antriebseinheit |
| US5611199A (en) * | 1995-12-13 | 1997-03-18 | Caterpillar Inc. | Two stage electrohydraulic pressure control valve |
| EP0908413A2 (de) * | 1997-10-08 | 1999-04-14 | Still Wagner GmbH & Co. KG | Fluförderzeug mit einer Lastaufnahmevorrichtung und Verfahren zum Absenken der Lastaufnahmevorrichtung |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533520A1 (de) * | 2003-11-18 | 2005-05-25 | HAWE Hydraulik GmbH & Co. KG | Elektrohydraulische Regenerativ-Steuervorrichtung zur Rotorblattverstellung einer Windkraftanlage |
| US7397145B2 (en) * | 2004-03-19 | 2008-07-08 | S.B. Patent Holding Aps | Automatic braking and locking of a wind turbine |
| WO2006010377A1 (en) * | 2004-07-28 | 2006-02-02 | General Electric Company | Mechanical emergency brake for wind turbines and method for operating same |
| US8007227B2 (en) | 2004-07-28 | 2011-08-30 | General Electric Company | Mechanical emergency brake for wind turbines and method for operating same |
| DE102010041824B3 (de) * | 2010-09-30 | 2012-03-08 | Repower Systems Se | Hydraulische Bremseinrichtung für eine Windenergieanlage |
| WO2012041433A1 (de) | 2010-09-30 | 2012-04-05 | Repower Systems Se | Hydraulische bremseinrichtung für eine windenergieanlage |
| CN103201508A (zh) * | 2010-09-30 | 2013-07-10 | 再生动力系统欧洲公司 | 用于风能设备的液压的制动装置 |
| CN103201508B (zh) * | 2010-09-30 | 2016-11-16 | 森维安欧洲股份公司 | 用于风能设备的液压的制动装置 |
| US9670904B2 (en) | 2010-09-30 | 2017-06-06 | Senvion Se | Hydraulic brake device for a wind turbine |
| US12372065B2 (en) | 2023-03-28 | 2025-07-29 | General Electric Renovables Espana, S.L. | Rotating unbalanced rotor hubs and installing wind turbine rotor blades |
Also Published As
| Publication number | Publication date |
|---|---|
| DE20212459U1 (de) | 2003-12-24 |
| EP1389686B1 (de) | 2005-06-01 |
| DE50300595D1 (de) | 2005-07-07 |
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